Board-sizing machine.



H. J. MITCHELL.

BOARD SIZING IVIACHiNE.

APPLICATION man 1UN25. 19x51.

Patented Dec. l2, 1916.

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H. J. MITCHELL.

BOARD SIZING MACHINE.

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Patented Dec. l2, 1916.

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BOARD SIZING MACHINE.

APPLICATION FILED 1uNE25f-1915.

Patented Dec. l2, 1916.

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BOARD SIZING MACHINE.

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H. J. MITCHELL.

BOARD SIZING MACHINE.

APPLICATION FILED IUNE 25. I9I5.

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H. J. MITCHELL.

BOARD SIZING MACHINE.

APPLICATION man JuNEzs, 1915.

Patented Dec. 12, 1916.

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H. I. MITCHELL.

BOARD SIZING MACHINE.

APPLICATION FILED .IUN25| I9I5.

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H. I. MITCHELL.

BOARD SIZING MACHINE.

APPLICATION FILED IuNEzs, 1915.

Patented Dec. l2, 1916.

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H. Jy MITCHELL.

BARD SIZNG MACHINE. APPLICATION man JuNE25, 1915.

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H. 1. MITCHELL.

BOARD SIZING MACHINE.

APPLICATION FILED IuIIE25, I9I5.

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BOARD SZING MACHINE.

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Patm'fed Dec. l2, 1916.

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H. J. MITCHELL.

BOARD SIZING MACHINE.

APPLICATION F|LEn1uNE25,1915.

Patented Dec. l2, 1916.

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H. I. MITCHELL.

BOARD SIZING MACHINE. APPLICATION FILED IUNEZS, |915.

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H. J. MITCHELL.

BOARD SIZING MACHINE.

APPLICATION F|LEn1uNE2s.19l5.

Patented Dec. l2, 1916.

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II. I. MITCHELL.

BOARD SIZING MACHINE. APPLICATION FILED IuIIE 25. 1915.

Patented Dec. l2, 1916.

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HARRISON J'. Ia'IITCIIEIIL, OF BELOIT, W'ISCON'SIN, ASSIGNOR T0 P. B. YATES MACHINE COMPNY, OF BELOIT, WISCGNSIN, A CORPORATION OF WISCONSIN'.

BOARD-SIZING- MACHINE.

Application filed June 25, 1915.

T 0 @ZZ whom t may concern Be it known that I, HARRISON J. Mironnnn, a citizen of the United States, residing at Beloit, in the county of Rock and State of lWisconsin, have invented certain new and useful Improvements in Board-Sizing Machines, of which the following is a speciication.

rihe invention has for its object the provision of mechanical means, acting as nearly as practicable in an automatic manner and under the ready control of a single operator, to reduce the lumber, as it comes from the mill varying in dimensions and with a rough uneven surface, to boards of chosen dimensions and surface finished in such manner as to be adapted without further treatment for use under commercial conditions-as to finish and size.

Among the features. of construction characterizing an embodiment of the invention are improved means for feeding the stock to the machine and introducing the same to the operating mechanism; the automatically operating stock-guiding gages whereby different widths of stock are properly presented to the sizing and surfacing tools; the control from one point of the various tools acting upon the 'four surfaces of the stock to adapt the same to material of different Widths and produce a desired shaping as tongue and groove, ship-lap, hollow back flooring, beading, etc., and to bring any one or more of the tools into and out of operation at will; improvements in construction and mounting of the working parts whereby to effect compactness, elasticity and adjustment, and capacity for performing superior work; also other improved features of construction and operation which will hereinafter be made apparent.

In order that the invention and the manner of its operation may be readily understood a preferred embodiment of the same is set forth in the accompanying drawings and in the description predicated thereon. As, however, the invention is susceptible of embodiment in other and varied constructional forms the drawings and description are to be taken in an illustrative and not in an unnecessarily limiting sense.

In the drawings, Figures 1 to 4 together represent the machine in side elevation; Figs. 5 and 6 together illustrate a partial Specification of Letters Patent.

Patented Dec. 12, 1916.

Serial No. 36,167.

side elevation from the opposite side; Figs. 7 and 8 together illustrate a partial top plan view; Fig. 9 is a horizontal section on the line 9-9 of Fig. 11; Figs. 10 and 11 together represent a vertical longitudinal section on the line 10-11 of Fig. 9; Fig. 12 is a vertical section on the line 12-12 of Fig.

2; Fig. 12a is a. detail top plan view of the yielding connection between certain parts; Fig. 13 is a vertical section on the line 13-13 of Fig. 11; Fig. 111 is a similar section on the line lei-14 of Fig. 10; Fig. 15 is a horizontal section on the line 15--15 of Fig. 10; Fig. 16 is a detail View illustrating the mounting of the gages; Fig. 17 is a vertical section on the line 1?-17 of Fig. 1; Fig. 18 is a similar section on the line 18-18 of Fig. 10; Fig. 19 is a horizontal section on the line 19-19 of Fig. 10; Fig. 20 is a vertical section on the line 20-20 of Fig. 11; Fig. 21 is a horizontal section on the line 21-21 of Figs. 11 and 20; Fig. 22 is a vertical section on the line 22-22 of Figs. 3 and 8; Fig. 23 is a vertical section on the line 23-23 of Fig. 3; and Fig. 24 is a diagrammatic view illustrating the power transmission.

Referring particularly to Figs. 3, 4L, 5, 8, 22 and 23, it will be observed that the supply of stock to the machine is by way of a feed table comprising frame members 31 suitably braced and providing journal boxes 32 for the shafts 33 of helically grooved rollers arranged transversely of the table in a longitudinal series, these rollers being driven from the pulley 35 on the shaft 36 by means of the sprocket 37, chain 38, the sprocket 39 and the chain 40, traversing the sprocket wheels 41 on the end of the shafts 33, the direction of rotation of the helically grooved rollers 34-Y is such that the grooves and ribs on the upper sides of the rollers will progress from the front of the machine, as seen in Fig. Zl, to the rear, or from the right of the machine as seen in Figs. 8, 23 and 22 to the left.

The material is supplied to the upper surface of the rollers upon the feed table by means of the carrier chains Llf2-i3 traversing sprockets ll-i on the shaft l5 journaled at 116 in the frame of the table and also traversing the relay pulleys 47, the chains 13 leading from sprockets, not shown, driven by any suitable source of power at the mill or point of lumber storage. The stock material in the form ofrough boards or the like is laid transversely on the sprocket chains 43 and is by the chains 43 delivered to the chains 42 which transport the pieces to and deliver the same-onto the upper face of the grooved rollers 34.

Suitably mounted on the sideof vthe feed table immediately below the sprocket chains 42 is a rock shaft 48 provided at intervals with laterally extendingV arms 49. rThe shaft is adapted to be rocked by means or the lever 50 so as to turn the arms 49 upward and interpose the same in the path of the material being transported upon the chains 42 and thereby interrupt its delivery to the top' of the feed table. The lever 50 is normally locked by means of the latch 5l so as te prevent accidental interposition of the arms 49 in the path of the material.

Extending longitudinally of the feed table above the grooved rollers 34 is a back guide 52 recessed at intervals for the accommodating of anti-friction guide rollers 53, said guide being carried by rock arms 54 mounted on the rock shaft 55, said arms connected bya link 56 with a lever 57 .fulerumed at 58 and having a finger piece 59 connected with a spring pressed plunger rod 60 for en gagement with the teethV of a sector 61. By the manipulation of the lever 57 the guide 52 may be adjusted laterally of the table in a position to guide stock of different widths from the feed table into'the machine after it is delivered against said guide by the progressive feeding movement due to the rotation of the grooved rollers 34.

In order to feed the material longitudinally of the table along the guide 52 the spur wheel 62 is provided, said spur wheel being slightly convex and iiXed upon a shaft 63 driven by means of the bevel gear 64 from its companion gear 65 on the shaft 66 connected by means of the bevel gear 67, 68, with the shaft 69 of the sprocket 7 0 which is driven from the sprocket 71 on the shaft 36 by means ofthe sprocket chain 72. The shaft 63 of the spur wheel 62 is journaled in a bracket 73 which is mounted to rock at 74 about the shaft 66. A rod 75 is connected to the boxing of the shaft 63 at 76 and is provided with a collar 77 between which and the upstanding bracket 7 8 of the frame is mounted a spring 79 which presses the shaft 63 and the spur wheel 62 yieldingly to the left as seen in Figs. 8, 22 and 23 against the material lying between said spur wheel 62 and the back guide 52., the direction of rotation of the spur wheel 62 being such as to feed the stock longitudinally of thetable into the machine.

' ln order to further facilitate the proper positioning of the stock upon the feed table as it is delivered thereto by the carrier chains 42 and to even the ends of the material upon the table a deflector 80 is mounted,

the material to advance along the inclined face 83 as it approaches the back guide 52.

The transmission of power to and the driving of the grooved rollers 34 and the feed spur wheel 62 is controlled by the tensioning or loosening of the belt to the pulley 35 by means of the belt tightener 84 upon the shaft 85 which has an upstanding arm 86 connected by means of the link 87 with the arm 88 of a rock shaft 89 connected by means of the gears 90, 91 with the shaft 92 to which is fixed the lever 93. Provision is made for holding the belt tightener in adjusted position by means of a latch 94, the teeth 95 of which are adapted to engage an edge of the machine frame at 96.

The machine proper comprises a massive frame 101 connected with or disposed immediately adjacent the end of the feed table above described. Having reference particularly to Figs. 7, 11, 12, 13 and 16 it will be observed that at that end of the machine adjacent the feed table is mounted a stock receiving roll 102 driven by means of a chain 103 from a sprocket 104. Immediately above the receiving roll 1.02 is arranged a sectional gage made up of a plurality of members arranged in a series transversely of the machine. This sectional gage is so Constructed that a sufficient number of individual members thereof will yield before the advancing stock to permit the remaining members to serve as an abutment gage or lateral support, the number of gage members yielding out of the way being dependent upon the width of the material entering the machine. f

By reference to Fig. 11 it will be observed that there is a frame composed of longitudinal supporting bars 105 connected by cross members 105, between which bars at the forward end thereof extends shafts 10G having their ends engaging in guiding blocks 107 and on these blocks at 108 are pivotally mounted gage members 109 spring pressed downwardly by means of springs 110 bearing upwardly against the shoulders 111 the end of an approaching board on to the if.

top surface thereof, the shoe 113 and gage member 109 yielding against the tension of the spring 110. The side face of the shoe toward the observer in Fig. 11 is perfect] smooth. It will be readily understood that 'l 

